<%@ page contentType="image/jpeg" import="java.awt.*, 
java.awt.image.*,java.util.*,javax.imageio.*" %> 
<%@ page import="java.io.OutputStream" %>
<%! 
	Color getRandColor(int fc,int bc) 
	{ 
		Random random = new Random(); 
		if(fc>255) fc=255; 
		if(bc>255) bc=255; 
		int r=fc+random.nextInt(bc-fc); 
		int g=fc+random.nextInt(bc-fc); 
		int b=fc+random.nextInt(bc-fc); 
		return new Color(r,g,b); 
	} 
%> 
<%
	try{
		response.setHeader("Pragma","No-cache");
		response.setHeader("Cache-Control","no-cache");
		response.setDateHeader("Expires", 0);
		int width=60, height=20;
		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
		OutputStream os=response.getOutputStream();
		Graphics g = image.getGraphics();
		Random random = new Random();
		g.setColor(getRandColor(200,250));
		g.fillRect(0, 0, width, height);
			
		g.setFont(new Font("Times New Roman",Font.PLAIN,18));
		g.setColor(getRandColor(160,200));
		for (int i=0;i<155;i++){
			int x = random.nextInt(width);
			int y = random.nextInt(height);
			int xl = random.nextInt(12);
			int yl = random.nextInt(12);
			g.drawLine(x,y,x+xl,y+yl);
		}
		String sRand="";
		for (int j=0;j<4;j++){
		String rand=String.valueOf(random.nextInt(10));
		sRand+=rand;
		g.setColor(new Color(20+random.nextInt(110),20+random.nextInt(110),20+random.nextInt(110)));
		g.drawString(rand,13*j+6,16); 
		}
		session.setAttribute("rand",sRand);
		out.print(sRand);
		g.dispose();
		
		ImageIO.write(image, "JPEG",os);
		os.flush();
		os.close();
		os=null;
		response.flushBuffer();		out.clear();		out = pageContext.pushBody();		}catch(IllegalStateException e){			System.out.println(e.getMessage());		e.printStackTrace();	}
%>